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Sat, 30 Nov 2024 16:44:24 -0800 (PST) From: Dmitry Baryshkov Date: Sun, 01 Dec 2024 02:44:08 +0200 Subject: [PATCH v5 4/9] drm/bridge: connector: add support for HDMI codec framework MIME-Version: 1.0 Message-Id: <20241201-drm-bridge-hdmi-connector-v5-4-b5316e82f61a@linaro.org> References: <20241201-drm-bridge-hdmi-connector-v5-0-b5316e82f61a@linaro.org> In-Reply-To: <20241201-drm-bridge-hdmi-connector-v5-0-b5316e82f61a@linaro.org> To: Andrzej Hajda , Neil Armstrong , Robert Foss , Laurent Pinchart , Jonas Karlman , Jernej Skrabec , Maarten Lankhorst , Maxime Ripard , Thomas Zimmermann , David Airlie , Simona Vetter , Jaroslav Kysela , Takashi Iwai , Liam Girdwood , Mark Brown , Phong LE , Inki Dae , Seung-Woo Kim , Kyungmin Park , Krzysztof Kozlowski , Alim Akhtar , Russell King , Chun-Kuang Hu , Philipp Zabel , Matthias Brugger , AngeloGioacchino Del Regno , Sandy Huang , =?utf-8?q?Heiko_St=C3=BCbner?= , Andy Yan , Alain Volmat , Raphael Gallais-Pou , Dave Stevenson , =?utf-8?q?Ma=C3=ADra_Cana?= =?utf-8?q?l?= , Raspberry Pi Kernel Maintenance Cc: Jani Nikula , dri-devel@lists.freedesktop.org, linux-kernel@vger.kernel.org, linux-sound@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-samsung-soc@vger.kernel.org, linux-mediatek@lists.infradead.org, linux-rockchip@lists.infradead.org X-Mailer: b4 0.14.2 X-Developer-Signature: v=1; a=openpgp-sha256; l=6723; i=dmitry.baryshkov@linaro.org; h=from:subject:message-id; bh=VCAvQVMxBhx8BnYWztLsVnSCZi3RzfwM/RTfomnZ9hc=; b=owEBbQGS/pANAwAKAYs8ij4CKSjVAcsmYgBnS7FYyGqWCdvL/agCm3oxLGVFMzbydzZgwc5DM q2eeG2nwdiJATMEAAEKAB0WIQRMcISVXLJjVvC4lX+LPIo+Aiko1QUCZ0uxWAAKCRCLPIo+Aiko 1XpTB/9Cgu7H+ULeYHSkB+Ullw1WhHtCEAurZAaD/vRAak11AeLncSmVHPKEONzTxv9lc6+qMRw 0ZHgk7AbwW3rY1WIvvzV+xdktOFP5pqYPG0nsqCM8a/tfbjLV+OdHUsPQHREwGdD7LWooD+rdpU bOoFqrkhfIZBjAECg0Im300H/CtCIZKYWv4ctOqXdvrpIPJUlSxnPds5ZcAgBkA81L37EFaknM2 DO0g+bf7X1Wlx/5qs0za+0xre+4sYRFXvo6sblVTJliJ4NLFTu3Qcyrit1FIp02HfUao1TxjLx0 lvKFEyqr/++yUZm4hijRiHmxky7ypJVh24iYA2pEgx5Q0dX6 X-Developer-Key: i=dmitry.baryshkov@linaro.org; a=openpgp; fpr=8F88381DD5C873E4AE487DA5199BF1243632046A X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20241130_164426_693725_F404B449 X-CRM114-Status: GOOD ( 20.04 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org Add necessary glue code to be able to use new HDMI codec framework from the DRM bridge drivers. The drm_bridge implements a limited set of the hdmi_codec_ops interface, with the functions accepting both drm_connector and drm_bridge instead of just a generic void pointer. This framework is integrated with the DRM HDMI Connector framework, but can also be used for DisplayPort connectors. Signed-off-by: Dmitry Baryshkov --- drivers/gpu/drm/display/drm_bridge_connector.c | 95 +++++++++++++++++++++++++- include/drm/drm_bridge.h | 23 +++++++ 2 files changed, 116 insertions(+), 2 deletions(-) diff --git a/drivers/gpu/drm/display/drm_bridge_connector.c b/drivers/gpu/drm/display/drm_bridge_connector.c index 320c297008aaa8b6ef5b1f4c71928849b202e8ac..12ab9f14cc8a8672478ae2804c9a68d766d88ea5 100644 --- a/drivers/gpu/drm/display/drm_bridge_connector.c +++ b/drivers/gpu/drm/display/drm_bridge_connector.c @@ -20,6 +20,8 @@ #include #include +#include + /** * DOC: overview * @@ -354,10 +356,80 @@ static int drm_bridge_connector_write_infoframe(struct drm_connector *connector, return bridge->funcs->hdmi_write_infoframe(bridge, type, buffer, len); } +static int drm_bridge_connector_audio_startup(struct drm_connector *connector) +{ + struct drm_bridge_connector *bridge_connector = + to_drm_bridge_connector(connector); + struct drm_bridge *bridge; + + bridge = bridge_connector->bridge_hdmi; + if (!bridge) + return -EINVAL; + + if (bridge->funcs->hdmi_codec_audio_startup) + return bridge->funcs->hdmi_codec_audio_startup(connector, bridge); + else + return 0; +} + +static int drm_bridge_connector_prepare(struct drm_connector *connector, + struct hdmi_codec_daifmt *fmt, + struct hdmi_codec_params *hparms) +{ + struct drm_bridge_connector *bridge_connector = + to_drm_bridge_connector(connector); + struct drm_bridge *bridge; + + bridge = bridge_connector->bridge_hdmi; + if (!bridge) + return -EINVAL; + + return bridge->funcs->hdmi_codec_prepare(connector, bridge, fmt, hparms); +} + +static void drm_bridge_connector_audio_shutdown(struct drm_connector *connector) +{ + struct drm_bridge_connector *bridge_connector = + to_drm_bridge_connector(connector); + struct drm_bridge *bridge; + + bridge = bridge_connector->bridge_hdmi; + if (!bridge) + return; + + bridge->funcs->hdmi_codec_audio_shutdown(connector, bridge); +} + +static int drm_bridge_connector_mute_stream(struct drm_connector *connector, + bool enable, int direction) +{ + struct drm_bridge_connector *bridge_connector = + to_drm_bridge_connector(connector); + struct drm_bridge *bridge; + + bridge = bridge_connector->bridge_hdmi; + if (!bridge) + return -EINVAL; + + if (bridge->funcs->hdmi_codec_mute_stream) + return bridge->funcs->hdmi_codec_mute_stream(connector, bridge, + enable, direction); + else + return -ENOTSUPP; +} + +static const struct drm_connector_hdmi_codec_funcs drm_bridge_connector_hdmi_codec_funcs = { + .audio_startup = drm_bridge_connector_audio_startup, + .prepare = drm_bridge_connector_prepare, + .audio_shutdown = drm_bridge_connector_audio_shutdown, + .mute_stream = drm_bridge_connector_mute_stream, +}; + static const struct drm_connector_hdmi_funcs drm_bridge_connector_hdmi_funcs = { .tmds_char_rate_valid = drm_bridge_connector_tmds_char_rate_valid, .clear_infoframe = drm_bridge_connector_clear_infoframe, .write_infoframe = drm_bridge_connector_write_infoframe, + .codec_funcs = &drm_bridge_connector_hdmi_codec_funcs, }; /* ----------------------------------------------------------------------------- @@ -459,7 +531,25 @@ struct drm_connector *drm_bridge_connector_init(struct drm_device *drm, if (connector_type == DRM_MODE_CONNECTOR_Unknown) return ERR_PTR(-EINVAL); - if (bridge_connector->bridge_hdmi) + if (bridge_connector->bridge_hdmi) { + bridge = bridge_connector->bridge_hdmi; + + if (bridge->hdmi_codec_i2s || + bridge->hdmi_codec_spdif) { + if (!bridge->funcs->hdmi_codec_prepare || + !bridge->funcs->hdmi_codec_audio_shutdown) + return ERR_PTR(-EINVAL); + + bridge_connector->bridge_hdmi = bridge; + + connector->hdmi_codec.dev = bridge->hdmi_codec_dev; + connector->hdmi_codec.i2s = bridge->hdmi_codec_i2s; + connector->hdmi_codec.spdif = bridge->hdmi_codec_spdif; + connector->hdmi_codec.max_i2s_channels = + bridge->hdmi_codec_max_i2s_channels; + connector->hdmi_codec.sound_dai_port = bridge->hdmi_codec_dai_port; + } + ret = drmm_connector_hdmi_init(drm, connector, bridge_connector->bridge_hdmi->vendor, bridge_connector->bridge_hdmi->product, @@ -468,10 +558,11 @@ struct drm_connector *drm_bridge_connector_init(struct drm_device *drm, connector_type, ddc, supported_formats, max_bpc); - else + } else { ret = drmm_connector_init(drm, connector, &drm_bridge_connector_funcs, connector_type, ddc); + } if (ret) return ERR_PTR(ret); diff --git a/include/drm/drm_bridge.h b/include/drm/drm_bridge.h index e8d735b7f6a480468c88287e2517b387ceec0f22..0ef9580ef6669f84327bdcb85a24fc83f76541bb 100644 --- a/include/drm/drm_bridge.h +++ b/include/drm/drm_bridge.h @@ -41,6 +41,8 @@ struct drm_display_info; struct drm_minor; struct drm_panel; struct edid; +struct hdmi_codec_daifmt; +struct hdmi_codec_params; struct i2c_adapter; /** @@ -676,6 +678,21 @@ struct drm_bridge_funcs { enum hdmi_infoframe_type type, const u8 *buffer, size_t len); + int (*hdmi_codec_audio_startup)(struct drm_connector *connector, + struct drm_bridge *bridge); + + int (*hdmi_codec_prepare)(struct drm_connector *connector, + struct drm_bridge *bridge, + struct hdmi_codec_daifmt *fmt, + struct hdmi_codec_params *hparms); + + void (*hdmi_codec_audio_shutdown)(struct drm_connector *connector, + struct drm_bridge *bridge); + + int (*hdmi_codec_mute_stream)(struct drm_connector *connector, + struct drm_bridge *bridge, + bool enable, int direction); + /** * @debugfs_init: * @@ -859,6 +876,12 @@ struct drm_bridge { * @DRM_BRIDGE_OP_HDMI is set. */ unsigned int max_bpc; + + struct device *hdmi_codec_dev; + int hdmi_codec_max_i2s_channels; + unsigned int hdmi_codec_i2s : 1; + unsigned int hdmi_codec_spdif : 1; + int hdmi_codec_dai_port; }; static inline struct drm_bridge *